Reduce Comminution Energy and Improve Energy Relevant Mineral Yield Using Carbon-negative Oxalatization Reactions
Technology Description:
Missouri University of Science and Technology aims to establish a new way to extract energy-relevant minerals, such as nickel and cobalt, from low-concentration, CO2-reactive mafic/ultramafic mine wastes (tailings, gangue, overburden rock, etc.) or geologic formations. The innovation is enabled by a novel pretreatment of mafic mine wastes using a CO2- or biomass-derived organic acid, which can dissolve the silicates efficiently. The progressive dissolution will be followed by the precipitation of mineralization products, which will turn bulky silicate rocks into micron-sized crystal particles and amorphous silica. This method could significantly reduce comminution energy and improve energy-relevant metal elements yield while permanently storing carbon via mineralization in forms of carbonates and/or oxalate hydrates.
Potential Impact:
The MINER program aims to use the reactive potential of CO2-reactive ore materials to decrease mineral processing energy and increase the yield of energy-relevant minerals via novel negative emission technologies.